If the yellow border touches the red, you have a shadowless card
You can populate everything from the 8/8 Elemental token of Grove of the Guardian, the 6/6 Wurm Beats of Roar of the Wurm (or a dead Penumbra Wurm) or even the */* stylings of the powerful Avatar summoned by no less a luminary than Ajani Goldmane himself
These platforms allow collectors to: Search for specific cards
While his companion requirement would be completely irrelevant in a singleton format such as Commander, the power of a requirement-free companion was deemed too much by the Commander Rules Committee, causing Lutri to be banned before he was even released
You get more matches in, you get more chances to cash a hot run, and aggressive or proactive decks often do well there
Instead, spending a little more on your mana is a good idea for 5-colour decks, because youll be able to easily make up the power from multi-colour uncommons and junk rares (Conflux is 11cT!)